Surface tension of liquid Fe-Cr-O alloys at 1823 K

Joonho Lee; Koji Yamamoto; Kazuki Morita

doi:10.1007/s11663-005-0025-0

Surface tension of liquid Fe-Cr-O alloys at 1823 K

Joonho Lee, Koji Yamamoto, Kazuki Morita

Research output: Contribution to journal › Article

22 Citations (Scopus)

Abstract

The surface tension of liquid Fe-Cr-O alloys has been determined by using the sessile drop method at 1823 K. It was found that the surface tension of liquid Fe-Cr-O alloy markedly decreases with oxygen content at constant chromium content, and the surface tension at a given oxygen content remains almost constant, regardless of the chromium content. When the surface tension of liquid Fe-Cr-O alloys is plotted as a function of oxygen activity, with an increase in the chromium content, the surface tension shows a much steeper decrease with respect to oxygen activity. The surface tension of liquid Fe-Cr-O alloys at 1823 K is given as follows: σ = 1842 - 279 In (1 + K _OU_O). Here, assuming a Langmuir-type adsorption isotherm, the adsorption coefficient of oxygen, K_O(Fe-Cr), as a function of chromium content, was shown to be K_O = 140 + 4.2 × [wt pet Cr] + 1.14 × [wt pet Cr]².

Original language	English
Pages (from-to)	241-246
Number of pages	6
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	36
Issue number	2
DOIs	https://doi.org/10.1007/s11663-005-0025-0
Publication status	Published - 2005 Apr
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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title = "Surface tension of liquid Fe-Cr-O alloys at 1823 K",

abstract = "The surface tension of liquid Fe-Cr-O alloys has been determined by using the sessile drop method at 1823 K. It was found that the surface tension of liquid Fe-Cr-O alloy markedly decreases with oxygen content at constant chromium content, and the surface tension at a given oxygen content remains almost constant, regardless of the chromium content. When the surface tension of liquid Fe-Cr-O alloys is plotted as a function of oxygen activity, with an increase in the chromium content, the surface tension shows a much steeper decrease with respect to oxygen activity. The surface tension of liquid Fe-Cr-O alloys at 1823 K is given as follows: σ = 1842 - 279 In (1 + K OUO). Here, assuming a Langmuir-type adsorption isotherm, the adsorption coefficient of oxygen, KO(Fe-Cr), as a function of chromium content, was shown to be KO = 140 + 4.2 × [wt pet Cr] + 1.14 × [wt pet Cr]2.",

author = "Joonho Lee and Koji Yamamoto and Kazuki Morita",

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AU - Lee, Joonho

AU - Yamamoto, Koji

AU - Morita, Kazuki

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N2 - The surface tension of liquid Fe-Cr-O alloys has been determined by using the sessile drop method at 1823 K. It was found that the surface tension of liquid Fe-Cr-O alloy markedly decreases with oxygen content at constant chromium content, and the surface tension at a given oxygen content remains almost constant, regardless of the chromium content. When the surface tension of liquid Fe-Cr-O alloys is plotted as a function of oxygen activity, with an increase in the chromium content, the surface tension shows a much steeper decrease with respect to oxygen activity. The surface tension of liquid Fe-Cr-O alloys at 1823 K is given as follows: σ = 1842 - 279 In (1 + K OUO). Here, assuming a Langmuir-type adsorption isotherm, the adsorption coefficient of oxygen, KO(Fe-Cr), as a function of chromium content, was shown to be KO = 140 + 4.2 × [wt pet Cr] + 1.14 × [wt pet Cr]2.

AB - The surface tension of liquid Fe-Cr-O alloys has been determined by using the sessile drop method at 1823 K. It was found that the surface tension of liquid Fe-Cr-O alloy markedly decreases with oxygen content at constant chromium content, and the surface tension at a given oxygen content remains almost constant, regardless of the chromium content. When the surface tension of liquid Fe-Cr-O alloys is plotted as a function of oxygen activity, with an increase in the chromium content, the surface tension shows a much steeper decrease with respect to oxygen activity. The surface tension of liquid Fe-Cr-O alloys at 1823 K is given as follows: σ = 1842 - 279 In (1 + K OUO). Here, assuming a Langmuir-type adsorption isotherm, the adsorption coefficient of oxygen, KO(Fe-Cr), as a function of chromium content, was shown to be KO = 140 + 4.2 × [wt pet Cr] + 1.14 × [wt pet Cr]2.

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